Japanese has a number of words that are translated in English as “dictionary”; see Japanese dictionary at Wikipedia. 辞典 is used (along with 辞書) to mean “dictionary” in the English sense of “lexicon”, as well as more broadly to mean other word books such as 類語辞典 (るいごじてん, ruigo jiten, “thesaurus”) and 文法辞典 (ぶんぽうじてん, bunpō jiten, “grammar book”), among others.